An infrared flashlight that growers shine on plants could eventually be used to determine whether a plant contains the right amount of nutrients.
USDA-Agricultural Research Service scientists are testing commercial nutrient sensors in their efforts to develop improved portable ones. The goal is to provide growers with extra days to correct nutrient problems before plants are seriously damaged. These sensors could determine ways that plants signal stress, enabling growers to detect problems before symptoms show up.
The scientists are working to develop a grower-affordable, easy-to-use portable kit.
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For more: Jonathan Frantz, USDA-Agricultural Research Service, (419) 530-1531; www.ars.usda.gov/is.
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